### 传感器类型
int16 UNKNOWN = 0    #未知传感器
int16 BUMPER = 1     #碰撞传感器
int16 DROP = 2       #跌落传感器
int16 SONAR = 3      #超声波传感器

### 碰撞传感器ID
int16 BUMPER_1 = 11     #碰撞传感器1
int16 BUMPER_2 = 12     #碰撞传感器2
int16 BUMPER_3 = 13     #碰撞传感器3
int16 BUMPER_4 = 14     #碰撞传感器4

### 跌落传感器ID
int16 DROP_1 = 21     #跌落传感器1
int16 DROP_2 = 22     #跌落传感器2
int16 DROP_3 = 23     #跌落传感器3
int16 DROP_4 = 24     #跌落传感器4

### 超声波传感器ID
int16 SONAR_1 = 31     #超声波传感器1
int16 SONAR_2 = 32     #超声波传感器2
int16 SONAR_3 = 33     #超声波传感器3
int16 SONAR_4 = 34     #超声波传感器4

int16 value  #设备ID